XBimmers.com | BMW X6 Forum X5 Forum
 
TireRack





Go Back   XBimmers.com | BMW X6 Forum X5 Forum > BIMMERPOST Universal Forums > Off-Topic Discussions Board

Post Reply
 
Thread Tools Search this Thread
      04-20-2018, 01:01 PM   #45
TomD335xicoupe
First Lieutenant
319
Rep
378
Posts

Drives: 08 335XI me ,19 x3 M40 wife
Join Date: Jul 2014
Location: North Jersey

iTrader: (1)

EST 4:20 is approaching here in NJ then this is gonna go sideways, please help before then or you will kill the BUZZ, LOL
__________________
Appreciate 0
      04-20-2018, 01:04 PM   #46
Ickdeep
Brigadier General
Ickdeep's Avatar
United_States
5706
Rep
4,209
Posts

Drives: '13 F10 M5 | '15 F15 X5
Join Date: Jul 2015
Location: Seattle, WA

iTrader: (3)

Garage List
2015 BMW X5  [10.00]
2013 BMW M5 [SOLD]  [10.00]
2013 BMW 535i [SOLD]  [10.00]
I kinda of have the logic figured out if anyone wants to help. I just cant figure out the final piece. PM me
Appreciate 0
      04-20-2018, 01:09 PM   #47
G35POPPEDMYCHERRY
Banned
G35POPPEDMYCHERRY's Avatar
No_Country
4992
Rep
4,139
Posts

Drives: F80
Join Date: Dec 2015
Location: Philadelphia

iTrader: (1)

Lmaoo i would not even attempt this high. lmaooo my brain would legit be fried. or onto to simpler tasks
Appreciate 0
      04-20-2018, 01:16 PM   #48
TomD335xicoupe
First Lieutenant
319
Rep
378
Posts

Drives: 08 335XI me ,19 x3 M40 wife
Join Date: Jul 2014
Location: North Jersey

iTrader: (1)

I gave up, Had to ask Google , according to one of my grandchildren , Google knows everything. On this occasion took a little digging but found the answer, good luck to all, tick tock to time to celebrate 4/20 style in a little while.
__________________
Appreciate 0
      04-20-2018, 01:26 PM   #49
HXS
Licensed Drug Dealer
HXS's Avatar
United_States
741
Rep
2,269
Posts

Drives: F10 M5
Join Date: Oct 2010
Location: SoCal

iTrader: (7)

My car is white, and here's why:

If my car was black, Jane and Max would've figured out their color by now. Jane sees my black car and Max's white car, and thinks "If my car was black, Max would've seen two black cars and deducted his car is white; but that didn't happen, so my car has to be white!" Then Jane would've won. Max is thinking the same thing Jane is, and Max could've won also.

BUT 20 minutes went by and none of them said anything, so my car has to be white.
Appreciate 3
Maynard3804.50
RickFLM410883.50
      04-20-2018, 01:29 PM   #50
delmarco
Major
delmarco's Avatar
United_States
492
Rep
1,416
Posts

Drives: 2011 335xi Deep Sea Blue
Join Date: Jul 2009
Location: Westchester County, NY

iTrader: (1)

Quote:
Originally Posted by HXS View Post
My car is white, and here's why:

If my car was black, Jane and Max would've figured out their color by now. Jane sees my black car and Max's white car, and thinks "If my car was black, Max would've seen two black cars and deducted his car is white; but that didn't happen, so my car has to be white!" Then Jane would've won. Max is thinking the same thing Jane is, and Max could've won also.

BUT 20 minutes went by and none of them said anything, so my car has to be white.
You are correct! Most people who answer their car is BLACK are using their Statistical/Probability side of their brain.

It can be easy to assume that your car is BLACK when thinking that you started the game with seeing 5 cars where 3 are WHITE and 2 are BLACK. Two cars are removed but during the game you see 2 WHITE cars still in the room so the only remaining options for your car's color are two black cars and one white car.

That will have you thinking chances are 2 out of 3 my car is BLACK and 1 out of 3 my car is WHITE. It is more likely my car is BLACK. This is a decent guess based on statistics of the number of black cars and white cars that you don't see in front of you but it is wrong!

That is the trick with this riddle - unlike many other riddles. Here you have to use the logic side of your brain and you must grasp the point of view of the other players.

Because YOU see two white cars YOU KNOW everyone in the game is seeing at least one white car. If your car was black then Jane or Max would see one white car and one black car and would have made a guess already.
They don't say anything for 20 minutes which makes you realize all cars have to be WHITE.


__________________

VISIT MY GARAGE TO SEE MY BMW E90 MODS:
http://directory.e46fanatics.com/use...Mod&UcId=20832

Last edited by delmarco; 04-20-2018 at 01:44 PM..
Appreciate 0
      04-20-2018, 01:30 PM   #51
PINeely
Lieutenant Colonel
PINeely's Avatar
United_States
1086
Rep
1,912
Posts

Drives: 2013 535i, 2015 Tundra 1794
Join Date: Jul 2009
Location: Jackson, MS

iTrader: (2)

If anyone looked out and saw two black cars, they would instantly know theirs is white, answer as such, and win the game.

Last edited by PINeely; 04-20-2018 at 06:17 PM..
Appreciate 0
      04-20-2018, 01:48 PM   #52
RickFLM4
Brigadier General
RickFLM4's Avatar
United_States
10884
Rep
4,816
Posts

Drives: M4
Join Date: Jul 2015
Location: PB County, FL

iTrader: (0)

Quote:
Originally Posted by HXS View Post
My car is white, and here's why:

If my car was black, Jane and Max would've figured out their color by now. Jane sees my black car and Max's white car, and thinks "If my car was black, Max would've seen two black cars and deducted his car is white; but that didn't happen, so my car has to be white!" Then Jane would've won. Max is thinking the same thing Jane is, and Max could've won also.

BUT 20 minutes went by and none of them said anything, so my car has to be white.
Ah, I needed to go one layer lower. Oh well, neither Max nor Jane figured it out either.
__________________
Current: 2018 SO/SS F83 ZCP
Gone: 2015 SO/SO F82
Appreciate 2
Hawkeye2069.50
      04-20-2018, 01:59 PM   #53
delmarco
Major
delmarco's Avatar
United_States
492
Rep
1,416
Posts

Drives: 2011 335xi Deep Sea Blue
Join Date: Jul 2009
Location: Westchester County, NY

iTrader: (1)

Quote:
Originally Posted by TomD335xicoupe View Post
I gave up, Had to ask Google , according to one of my grandchildren , Google knows everything. On this occasion took a little digging but found the answer, good luck to all, tick tock to time to celebrate 4/20 style in a little while.
Google for THE THREE PRISONER PUZZLE. This is my variation of this ancient riddle.

Attached Images
 
__________________

VISIT MY GARAGE TO SEE MY BMW E90 MODS:
http://directory.e46fanatics.com/use...Mod&UcId=20832
Appreciate 1
BimmerAg425.00
      04-20-2018, 02:45 PM   #54
Habs11
Private First Class
United_States
160
Rep
181
Posts

Drives: 2015 X5 35i
Join Date: May 2017
Location: Rochester, NY

iTrader: (0)

Quote:
Originally Posted by TheWatchGuy View Post
you dont know what has been taken away just by what you see.
we already know it's not the case that two white cars were taken away because 2 blacks and one white would remain and the person in the white would see two black cars and know they are in white. game over.

if i see a black and a white car:
i already know that 2 whites were not taken away.
i know that 2 black cars were not taken away because i see one.
thus 1 black and 1 white were taken away.
since one of each was taken away one black and two white remain and i see the two white cars so i would have to be in the black car......but in this scenario the two others see me in my black car and someone in a white car so they would know they are in a white car and the game is over.....thus if i see a white and a black i must be in white.

if i see two white cars:
i know i can not be in a black car because the logic above would apply to whomever can see a black (mine) and a white car, thus i must be on a white car

this makes sense to me - does it to anyone else??
Appreciate 0
      04-20-2018, 02:50 PM   #55
BimmerAg
Lieutenant
BimmerAg's Avatar
United_States
425
Rep
545
Posts

Drives: 2011 135i
Join Date: May 2017
Location: San Antonio, TX

iTrader: (0)

Quote:
Originally Posted by delmarco View Post
Google for THE THREE PRISONER PUZZLE. This is my variation of this ancient riddle.
This one was a bit easier for me.

Answer below (highlight to see better):
Prisoner 1 sees a black and a white hat, so he cannot know for sure what color his hat is. Prisoner 2 knows that 1 must see two different color hats, because if he saw two of the same color he would have guessed his own hat color already. prisoner 2 sees the 3's hat is white, and know's his hat must be a different color from 3's so Prisoner 2 correctly guesses that his hat is black
__________________
2011 BMW 135i ///M-Sport, DCT
Bilstein B12 kit, Dinan camber plates, M3 front control arms, Whiteline poly RSFB, MHD Stage 1, cp-e Charge Pipe, H&R Front sway bar, BMW performance diffuser
Appreciate 0
      04-20-2018, 02:53 PM   #56
Ickdeep
Brigadier General
Ickdeep's Avatar
United_States
5706
Rep
4,209
Posts

Drives: '13 F10 M5 | '15 F15 X5
Join Date: Jul 2015
Location: Seattle, WA

iTrader: (3)

Garage List
2015 BMW X5  [10.00]
2013 BMW M5 [SOLD]  [10.00]
2013 BMW 535i [SOLD]  [10.00]
Quote:
Originally Posted by delmarco View Post

Because YOU see two white cars YOU KNOW everyone in the game is seeing at least one white car.

If your car was black then Jane or Max would see one white car and one black car and would have made a guess already.

They don't say anything for 20 minutes which makes you realize all cars have to be WHITE.


Question on this line: How are either Max or Jane able to make a guess if they see one black and one white car? What would they guess?
Attached Images
 
Appreciate 0
      04-20-2018, 02:57 PM   #57
No one
Major
1030
Rep
1,326
Posts

Drives: F21 118i
Join Date: Oct 2014
Location: Undisclosed

iTrader: (0)

Only three white cars give the players equal opportunities (making it a gamble by the way).

Two black - two players are doomed to lose.

One black - one player is doomed to lose.

(A black is a doomed loser every time. Why so? )

"After 20 minutes of silence you are amazed you didn't guess your color sooner." - If you did you'd likely lose. It's assumptions over logic (effectively guessing) game actually.
Appreciate 0
      04-20-2018, 03:29 PM   #58
No one
Major
1030
Rep
1,326
Posts

Drives: F21 118i
Join Date: Oct 2014
Location: Undisclosed

iTrader: (0)

Quote:
Originally Posted by No one View Post
Two black - two players are doomed to lose.
It can be only one actually: "If anyone guesses wrong then that player has to buy a car each for the other two players". If you see two black cars you don't have to speak at all unless you mind losing a friend (or two).
Appreciate 0
      04-20-2018, 04:57 PM   #59
MadDog
Careful, I Bite.....
MadDog's Avatar
United_States
153
Rep
504
Posts

Drives: 2006 325i
Join Date: Dec 2006
Location: S.F. Bay Area

iTrader: (0)

Garage List
2006 325i  [7.50]
Quote:
Originally Posted by delmarco View Post
Google for THE THREE PRISONER PUZZLE. This is my variation of this ancient riddle.

Your variation makes no sense.
Appreciate 0
      04-20-2018, 04:58 PM   #60
Hawkeye
Brigadier General
Hawkeye's Avatar
No_Country
2070
Rep
4,365
Posts

Drives: '07 Z4 Coupe, '21 X3, '16 GMC
Join Date: Aug 2007
Location: Iowa

iTrader: (0)

Garage List
Quote:
Originally Posted by trm0053 View Post
Since you see two white cars, which are BMWs, you're in a BMW dealership. They're not going to sell you a Merc.
So you also are in a BMW which is white
The dealership in my town sells both BMW and Merc out of the same building.

Quote:
Originally Posted by Maynard View Post
I'm beginning to understand how my dad paid his way thru college playing poker of the 3 unknown cars, 2 are black and 1 white: selecting one from them (the one you are in) is a 33% chance of each, and only one is white, so 33% chance white, 66% black. But it is correct that the answer does not rely upon this probability; Joester is on to it, I believe.
Quote:
Originally Posted by 1MOREMOD View Post
If there are 3 possible cars left 2 black and 1 white your odds aren't 50 percent it's white.
The /s indicates I was being sarcastic.

There are a lot of people I know who wouldn't be able to deduce their color if they saw a white and black so I probably just wouldn't guess. Don't need another idiot driving a new BMW/Merc.
__________________
2007 Z4 3.0si Coupe • 6 MT • Black Saphire Metallic • PP • SP
2016 GMC Sierra SLT Z71 Premium Plus 4x4
2017 Harley StreetGlide • Denim Black • V&H Tune
2021 BMW x30i • Phytonic Blue Metallic • Fully loaded
Appreciate 0
      04-20-2018, 05:02 PM   #61
1MOREMOD
-
1MOREMOD's Avatar
United_States
11815
Rep
23,187
Posts

Drives: Race car->
Join Date: Mar 2009
Location: check your mirrors

iTrader: (5)

I need a drink
Appreciate 1
upstatedoc7555.50
      04-20-2018, 05:05 PM   #62
RickFLM4
Brigadier General
RickFLM4's Avatar
United_States
10884
Rep
4,816
Posts

Drives: M4
Join Date: Jul 2015
Location: PB County, FL

iTrader: (0)

I just had one. Ready for another.
__________________
Current: 2018 SO/SS F83 ZCP
Gone: 2015 SO/SO F82
Appreciate 1
upstatedoc7555.50
      04-20-2018, 05:45 PM   #63
upstatedoc
I'll get back to you
upstatedoc's Avatar
7556
Rep
2,132
Posts

Drives: blue streak
Join Date: Dec 2009
Location: not downstate

iTrader: (2)

You can say that again
Attached Images
 
__________________
2018 Stinger GT
2009 E90 N51 /Active Autowerke Stage 2 tune/BMW Performance Exhaust/
Countermeasure enthusiast.
Appreciate 1
RickFLM410883.50
      04-20-2018, 05:48 PM   #64
jmg
Lieutenant General
jmg's Avatar
18493
Rep
14,085
Posts

Drives: G82 M4C X-Drive
Join Date: Mar 2013
Location: Orange County, CA

iTrader: (1)

Garage List
2022 G82 M4C X-Drive  [9.83]
2018 F80 M3 CS  [9.83]
2019 i3 BEV  [0.00]
Quote:
Originally Posted by delmarco View Post
A variation of a popular riddle that includes a couple of BMW 3 series and a Benz or two.

Enjoy.

If I am in a black car, then Jane will know she can't be in a black car because Max would see us in two black cars and guess correctly and the game would be over. But Jane doesn't know she is in a white car, otherwise she would guess so and the game would be over. Therefor I am in a white car.
__________________

2022 G82///M4 Competition X-Drive - KW-HAS, EBC Bluestuff, Millway Race Camber Plates, Cup2 Connect*, PSI High Flow Midpipe, Lightweight Front Lip, M Perf Flow Through Wing
Previous • 2018 F80 ///M3 CS • 2016 F80 ///M3
IG: Raging_G82
Appreciate 2
Mingwan1891.00
DieselOG1673.50
      04-23-2018, 08:45 AM   #65
jaye944
Captain
No_Country
1007
Rep
638
Posts

Drives: a
Join Date: Jul 2015
Location: a

iTrader: (0)

In critical moments men sometimes see exactly what they wish to see
Appreciate 0
      04-23-2018, 09:31 AM   #66
PshhhhhMW
Major
PshhhhhMW's Avatar
554
Rep
1,030
Posts

Drives: 2021 Alpine White M550i
Join Date: Jun 2007
Location: SFV, CA

iTrader: (0)

The only problem with all this logic is you're assuming the other two share it. With a 50/50 shot, I can see the game ending within the first minute depending on participants.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:49 AM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST